"You think you know how this goes, do you?

"Well, let me tell you something. If you are seeing something in my company, it is something that you need to see.

"That's how it goes."

She reaches out and closes her hand around his wrist again, and in the space of a blink of an eye, they're back in Milliways.

"Try to keep an open mind, Dr. Banner, when you meet my siblings. You just might learn something."

She's fading now. They never stay long, once their jobs are done.

"We're good at what we do. And you're not exactly the first case we've taken on.

"Merry Christmas."

And then she's gone.